To be put simply, Mao could not win the support of America due to China being communist and America wanting at all costs not to become Communist, so they pulled out all contact with China. Even during the civil war in China, America was supporting the Nationalists, as they were that desperate for China not to become a communists country.
American attacks consistently failed in Canada
The main reason it failed was because American forces did not land at the Bay of Pigs to reinforce Cuban rebels. Because of that, the rebels were quickly defeated by the Cuban Nationalists.
He was shunned because the Great Leap Forward failed miserably and the Cultural Revolution achieved nothing other than the destruction of China's economy, government, social and culture as well a creating anarchy.
congress would not fund new roads, bridges, or canals
Some would contend that it was because their cause was just. They may have been more persistent in combat because they had so much to lose if they failed and much of the credit must be given to France for all of the support and military aid they provided to the Patriot cause.
failed to organize unskilled workers
OK, I am going to assume that you left at least one word out of your question, because people do not collect stars, and even if they did, you failed to state which American.
Redstone
There are a number of reasons why Henry Clay's American system failed. The main reason is believed to have been lack of sufficient funding.
They failed because they were killed by the Philippine's president.
Canada
Failblog.com